Hello,

Answer A

d :the distance in miles
t: the time in hours
v: the speed in miles/hours (vistesse)

d=v*t
==>d=40*4=160(mi)

d=55*x=160==>x=160/55=2.909090... (mi/(mi/h)=h)≈2.91(hours)

8 0

3 years ago

3. If I get a 2/3 on an exit ticket. What is that grade out of 5?*

Diano4ka-milaya [45]

2/15 sorry if it’s wrong all I did was just divide both of them

7 0

3 years ago

Read 2 more answers

What is 12 divided by 3 as an algebraic expression

butalik [34]

12/3 or the same thing as ur question but just add a division sign, eg. difference of two and one that would be 2-1

6 0

2 years ago

Which expression can be used to find measure angle R

Novay_Z [31]

Answer:

cos-1(-4/14)

Step-by-step explanation:

4.5=r

3.5=s

2=t

By law of cosines:

$r^{2}=s^{2}+t^{2} -2st cosR\\\\CosR= \frac{r^{2} -s^{2} -t^{2} }{-2st} \\\\R=cos^{-1} (\frac{(4.5)^{2}-3.5^{2} -2^{2} }{-2(3.5)(2)} )\\R= cos^{-1} (-\frac{4}{14} )$

4 0

2 years ago